Wireless transceivers with filter arrangement for WiFi and LTE coexistence

US9232564B2 · kind B2 · utility

Assignee

• Broadcom Corporation · US

Inventors

• Kamesh Medapalli · San Jose, US
• Erik Richard Stauffer · Sunnyvale, US
• Bertrand Hochwald · South Bend, US
• William Fujimoto · San Jose, US
• Joseph Saada · Haifa, IL
• Richard Compton · Beaverton, US

Key dates

• Filing date: Jan 24, 2014
• Grant date: Jan 5, 2016
• Expiry date: Mar 21, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/525
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Embodiments provide WiFi and LTE tailored transceiver radio frequency (RF) filtering techniques and configurations to enable coexistence between WiFi and LTE transceivers operating in close proximity. In particular, embodiments provide filtering techniques to reject emissions from LTE into WiFi, and vice versa. The filtering techniques eliminate the need for additional isolation between LTE and WiFi antennas (approximately 50 dB), which is beyond what is achievable in practice. Embodiments can be tailored according to different use cases of the WiFi and LTE transceivers (e.g., fixed CPE, portable router, smart phone with tethering).